• Webster's Revised Unabridged Dictionary
    • a Epipteric (Anat) Pertaining to a small Wormian bone sometimes present in the human skull between the parietal and the great wing of the sphenoid.
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Century Dictionary and Cyclopedia
    • epipteric Situated over the alisphenoid or greater wing of the sphenoid bone: specifically applied, in human anatomy, to a supernumerary or epactal bone of the skull sometimes found in the fontanel at the anterior inferior angle of the parietal bone, just above the end of the alisphenoid.
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Webster's Revised Unabridged Dictionary
Pref. epi-, + Gr. wing. So called because above the wing of the sphenoid